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ios地图小例子和手势的使用供大家参考一下呦

最近做了一个小例子做点笔记供刚入职场的菜鸟学习，也供自己记忆。

目标：在地图上加上标记同时复习一下手势的使用

效果图：

具体代码

导入框架：MapKit.framework

创建一个新类继承NSObject 叫做MyAnnotation 并在后边加上<MKAnnotation>

#import <Foundation/Foundation.h> #import <MapKit/MapKit.h> @interface MyAnnotation : NSObject<MKAnnotation> @property (nonatomic, assign) CLLocationCoordinate2D coordinate; @property (nonatomic, copy) NSString *title; @property (nonatomic, copy) NSString *subtitle; @end

viemController.m的代码

#import "ViewController.h" #import <MapKit/MapKit.h> #import "MyAnnotation.h" @interface ViewController ()<MKMapViewDelegate> @property(nonatomic,strong)MKMapView *mapView;//添加一个MApView @property(nonatomic,strong)MKAnnotationView *annotationView;//添加一个标记view @end

//对mapView 的响应的设置并将它加到跟视图中

//添加一个标记

//创建手势实现长按能够加一个标记

- (void)viewDidLoad {  [super viewDidLoad];  //对mapView 的响应的设置并将它加到跟视图中  _mapView = [[MKMapView alloc]initWithFrame:self.view.frame];  _mapView.mapType = MKMapTypeStandard;  _mapView.delegate = self;  [self.view addSubview:_mapView];  //对annotation 的设置  _annotationView = [[MKAnnotationView alloc]initWithFrame:self.view.frame];  //添加一个标记  //设置标记  MyAnnotation *annotation = [[MyAnnotation alloc]init];  //设置经纬度  annotation.title = @"中国";  annotation.subtitle = @"河北";  annotation.coordinate =CLLocationCoordinate2DMake(40, 110);  [self.mapView addAnnotation:annotation];  //设置显示标识的内容  [_mapView setCenterCoordinate:annotation.coordinate animated:YES];  //创建手势实现长按能够加一个标记  UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPress:)];  [self.view addGestureRecognizer:longPress]; }

//手势长按的实现

-(void)longPress:(UILongPressGestureRecognizer *)sender {     //获得点击点的坐标     CGPoint point = [sender locationInView:self.view];     //将点击的地图上点转换成经纬点    CLLocationCoordinate2D Mycoordinate= [self.mapView convertPoint:point toCoordinateFromView:self.mapView];     MyAnnotation *annotation = [[MyAnnotation alloc]init];     annotation.coordinate = Mycoordinate;     annotation.title = @"河北";     annotation.subtitle = @"石家庄";          [self.mapView addAnnotation:annotation];      }

#pragma mark-mapView的代理方法-显示标识的方法

-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {  //创建一个标识的ID  static NSString *annotationID = @"annotation";  //先从用户的缓存里找大头针视图  MKPinAnnotationView *view = (MKPinAnnotationView*)[mapView dequeueReusableAnnotationViewWithIdentifier:annotationID];  //如果没有大头针视图,自己进行创建  if(!view)  {   view = [[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:annotationID];  }  //对大头针视图的属性进行设置  //设置标记为传进来的标记  显示气泡 大头针的颜色  view.annotation = annotation;  view.canShowCallout = YES;  view.pinColor  = MKPinAnnotationColorRed;  //左边的副视图  view.leftCalloutAccessoryView =[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"0.png"]];  return view; }

正文到此结束